SAS

Macros for download

I have made a number of macros that I use frequently in my own use of SAS.
I plan to put out more of these later, but some of these need some improvement
first: here are a few that I consider generally useful.

Takes quoted SAS code as a parameter and runs it once. Afterwards, it will not
be rerun unless a rerun is triggered by some other event: e.g. change in the code, or
by the rerunning of some other RunOnce on which it depends. This is particularly
useful if you have some code that needs to be run at the start, e.g. to generate data,
but takes a while to run: an alternative to commenting it out.